Net Rentable Area, Sublease

No definition available.

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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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- Details

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Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=abus_SubleaseBurnabyFacilityMember
Namespace Prefix:
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Balance Type:
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Related party transactions (Details) $ in Thousands	3 Months Ended	12 Months Ended
Related party transactions (Details) $ in Thousands	Dec. 31, 2020 USD ($) ft²	Dec. 31, 2020 USD ($) ft²	Dec. 31, 2019 USD ($)	Jul. 31, 2020 USD ($)
Related Party Transaction [Line Items]
Gain (loss) on investments		$ (2,545)	$ (22,522)
Genevant
Related Party Transaction [Line Items]
Investments				$ 2,500
Gain (loss) on investments	$ 2,500		(14,900)
Genevant \| Equity Method Investee \| Administrative and transitional services
Related Party Transaction [Line Items]
Income from related party		100	$ 100
Genevant \| Equity Method Investee \| Sublease Burnaby facility
Related Party Transaction [Line Items]
Income from related party		$ 200
Area of sublease facility \| ft²	17,900	17,900